Simulations
of the global carbon cycle are strongly dependent upon model representations of
the exchange of carbon, energy, moisture and momentum between the atmosphere
and terrestrial biosphere. The carbon flux produced by these biophysical models
is subsequently dependent on the method used to produce respiration and
photosynthesis within the model on both spatial and temporal scales. We use an
updated version of the Simple Biosphere Model (SiB3) to simulate global carbon
flux between atmosphere and land surface, and compare model results to flux
tower and flask network observations. SiB3 assumes no annual net source or sink
of carbon in each gridcell, but the spatial pattern and seasonality of carbon
flux and atmospheric concentration can be strongly influenced by
parameterization of heterotrophic and autotrophic respiration and the
representation of vegetation phenology.
Author: I.T. Baker, K.M. Schaefer and A.W. Philpott (baker at atmos dot colostate dot edu)
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